Improvement in self-oiling pullets



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J. GOODRIGH AND H. J. COLBRN, OF FITGHBURG, MASSACHUSETTS, ASSIGNOR TO ROLLS'IONE MACHINE WORKS, OF SAME PLACE.

Letters Patent No. 89,652, dated .Z1/[ay 4, 1869.

Mci-

IMPROVEMENT IN SELF-OILING- PULLEYS.

The Schedule referred to in these Letten Patent und making part: vof the lume.

Know all men by these presents.-

That we, J. Goonmon audH. J. GOLBURN, both of Fitchburg, in the county of Worcester, and Gom monwealth of Massachusetts, have invented certain new and useful Improvementsin Self-Oiling Pulleys and we do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part otthis specification, in which- Figure l represents a perspective View of a loose l pulley with our improvements applied thereto; and

Figure 2 represents a longitudinal central section on line A B, iig. 1. v

. To enable those skilled in the art to which our invention belongs, to make and use the same, We will describe it more in detail.

Numerous inventions have been made and applied to loose pulleysfor the purpose of obviating the necessity of frequent oiling, and at the same time insuiiug the proper lubricating of the rubbing or bearingsuras.

Some of these devices have proved of' much utility, but to all-oil them we believe vmore or less objections exist, and it was with a view to produce aself-oiling pulley superiorto those in use that our experiments 'were made which resulted in our present improvements.

In the drawingsA is the rim of the pulley, connected to the long andk short hubs B and G by-the webs D and E. h

The short hub C has a screw-thread, a, to iit'the screw-thread b in the hub-nut F.\ F

rlhe pulley is cored out between the Bauges D E, as indicated in g. 2, while the hole through the short hub G is bored or chucked out somewhat larger than the hole through the long hub B. l

The hole in hub B is, however, ehucked or bored out larger on the inside to form a shoulder or flange c to support the inner end of the bushing G, the outer end of which bushing just lits the holethrough hub D.

The outer surface of bushing G is in this instance turned down to receive the brous material d, which is wound about the bushing as indicated in the draw- 1n rs.

lhe length of thebushing is sueh that when hubnut F Vis turned or screwed down, as indicated in the drawings, the bushing will be held firm between the shoulder c on hub B, and shoulder e, on hub-nut F, thereby making oil-tight joints at both ends of bushing G.

Nut F may be made so that it can be `turned by a common wrench, but we prefer to make it as shown in the drawings, with one or more holes j' to receive the fork or forks of a cant-wrench,I by which it can he easily turned off or on as occasion may require.

The space or chamber I is to be filled with oil or some proper lubricating-substance, the same being turned in through hole g, which is closed by a screw, h.

',Ihebushing G is made of wood, and when nthe pulley i's'in usebsiiiicient oil or'lubricatingsiibstanee will pullesuiiciently lnbriated;v The process is so slow and gradual, however, that the 'oil' or lubricating-substance never drops from theends ofthe hubs Then again, in the passage-through the pores of the wooden bushing of the lubricating-substance, all dirt,

gumfning, or clogging matter is arrested and separated from the oily substance, thus rendering the pulley less liable to become clogged or gunimed up, than it is when the oil isapplied through cotton or wool-waste.

It will be understood that'the form of the pulley may bevalied to suit the tastes of manufacturers, the rim A being supported by arms arranged in any of the common modes.

The fibrous coating d may be dispensed. with with-A out materially affecting the utility of the device, and the bushing may be secured in a dii'erent manner without departing from the principle of our invention.

Having described our vself-oiling pulley,

What we claim therein as new, and of our invention, and desire to secure by Letters Patent, is

1. The combination with the hubs B and O of the wooden bushing G, and hub-nut F, substantially as 'and for the purposes set forth,

2. The combination with the rim A, hubs B andv C, flanges or webs D E, of the wooden bushing G, and hub-nut F, substantially as and for the purposes set forth. v J. GOODRIOH,

` H. J. OOLBUBN. Witnesses:

Taos. H. DODGE, E. G. SPAULmNe. 

